9.1.2
9.1.2
9.1.2
9.1.2 Voice
Voice
Voice
Voice features
features
features
features
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SIP supports 2 SIP servers
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Support SIP 2.0 (RFC3261) and correlative RFCs
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Support IAX2
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Support multiple call queuing
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Support IAX2 line key to call
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Codec: G.711A/u, G.723.1, G.729a/b, G.722, G.726-32
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Support HD voice
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Echo cancellation: G.168 Compliance in LEC, additional acoustic echo
cancellation(AEC) can reach 96ms max filter length in hands-free mode
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Support Voice Gain Setting, VAD, CNG
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Support full duplex hands-free
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SIP support SIP domain, SIP authentication(none basic, MD5), DNS
name of server, Peer to Peer/ IP call
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Headphone interface(RJ9 connector)
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2 line keys can be used with screen multi line operation, or as a SIP line
key
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4 DSS keys
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Soft keys programmable, function keys programmable
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Customizable multi-language version, the default is English
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SIP application: support Call forward / transfer (blind transfer /
attended transfer / Ringing Transfer) / Call hold / call waiting /